Question

The Hertzsprung-Russel diagram is used to show the relationship between which two characteristics of stars?

Answer 1

Between the stars' absolute magnitudes or luminosities versus their stellar classifications or effective temperatures. 

Answer 2

Answer;

Luminosity and temperature of a star

Explanation;

• Hertzsprung-Russel diagram or HR diagram is a scatter plot or a graphical tool that is used by astronomers to classify stars based on their luminosity, color, temperature, spectral type  and also the stage of evolution.
• The HR diagram plots the temperature of the stars against the luminosity, or the color of starts against absolute magnitude.

• The HR diagram is divided into stages, for example those stars at the stable phase of hydrogen burning are found within the main sequence according to their mass.